Election 2016: Tuesday's vote could define race

Tuesday's primaries could provide defining moments in the race for both the Democratic and Republican nominations for president, with enough delegates up for grabs to turn Donald Trump and Hillary Clinton from front-runners to likely nominees.

Tuesday's primaries could provide defining moments in the race for both the Democratic and Republican nominations for president, with enough delegates up for grabs to turn Donald Trump and Hillary Clinton from front-runners to likely nominees.

On a dirt road past rows of date trees, just feet from a dry section of Colorado River, a small construction crew is putting up a towering border wall that the government hopes will reduce — for good — the flow of immigrants who cross the U.S.-Mexico border illegally.

California police have arrested a woman who threw a feminine hygiene device containing "what appeared to be blood" onto the floor of the state Senate, splashing onto lawmakers and forcing them to finish their work in a committee room on the final day of the legislative session.